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batalygina
@batalygina
August 2022
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Ctgx+3tgx+5=0
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mikael2
Verified answer
1/tgx+3tgx+5=0
1+3tg²x+5tgx=0
3tg²x+5tgx+1=0 D=25-4*3=13
tgx=1/2[-5-√13] x=arctg(-2.5-0.5√13)+πn
tgx=1/2[-5+√13] x=arctg(-2.5+0.5√13)+πn n∈Z
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Verified answer
1/tgx+3tgx+5=01+3tg²x+5tgx=0
3tg²x+5tgx+1=0 D=25-4*3=13
tgx=1/2[-5-√13] x=arctg(-2.5-0.5√13)+πn
tgx=1/2[-5+√13] x=arctg(-2.5+0.5√13)+πn n∈Z